Improvement in acid siphon-pumps



F.' NICHOLS.

ACID SIPAHON PUME.

No.175,489. Patented March 28,1876.

Jilin/ML N. PETERS, PHGTO-LI'IHGGRAPHER, wAsHlNGTON, n C.

UNITED STATES Plrrmv.frA OFFIci-uc FRANCIS NICHOLS, NEW LONDON, CONNECTICUT.

IMPROVEMENT IN ACID SIPHON-PUMPS.

Specification forming part of Letters Patent No. 175,489, dated March 28, 1876; application led December 1, 1875.

To all whom t may concern Be it known that I, FRANCIS NICHOLS, of the city and county of New London and State of Connecticut, have invented certain new and useful Improvements in Acid Siphon-Pumps;v

tion has reference specially to the apparatus described and shown in the United States Patent No. 136,934, dated March 18, l873,`and granted to me.

In that apparatus the pump-body and its induct and educt additions were of glass, connected by rigid or inexible joints. In my present pump, the connections ot' the pumpbody and parts leading therefrom are made by rigid anged necks and elastic exile collars, whereby the parts are not only easier joined or separated, but rendered less liable to being broken, and they are also rendered capable of being repaired at less cost and inconvenience in case either should be accidentally broken.

Furthermore, I have provided the apparatus with a metallic stand or. supporter of a peculiar construction, to ena-ble it to be easily adjusted to a carboy, demijohn, or other vessel, from which it may be desirable to extract a liquid by such apparatus. I have also provided the induction and eduction tubes of the apparatus with peculiar joints, whereby their elastic ilexile connections are protected by air in chambers from the acid or fluid drawn or forced through the joints. The glass body ofthe pump I also construct with a nipple-receiving neck, having a hole in its upper part, and the nipple for the elastic bulb I make with a cup or mouth-piece, to tit upon such neck, the whole being not only to enable the bulb to be easily removed from the nipple, in order to admit air to pass into the pump, to stop it from acting as a siphon, but to obtain a stronger support for the nipple.

In the drawings, A denotes the glass body of the pump, open at top and bottom, and there provided with necks a b, each of which ou its outer surface has a flange, c, extending from and around it. In the -lower part of the body A is a valve-seat, B, provided with a valve, C, to open upward, such valve having a stem, c', which goes down through the opening of the valve-seat, and is furnished with a head, d. The glass eductionneck D, separate from the body A, extends' down into the said body, and there terminates in a valve-seat, e, provided with a valve, f, to open upward. This neck has a flange, g, going around it, and projecting from it, to support it upon' the top ofthe upper neck ofthe body A. Furthermore, the said body A and the said eduction neck are connected by means operates differently from an elastic collar, with out such a groove or its equivalent, as the groove, by embracing both flanges on their sides, aswell as peripheries, operates to keep the collar in its normal position, whenever one of the parts held or enveloped by it may be drawn from or bent somewhat out of line with the other. It would 'answer the same purpose were the groove on the outside of the collar, as in such case the parts next it, being thicker, would close down against the sides ofthe flanges and produce like effects.

In order to connect an induct or a glass tube with the lower neck b of the body A, or an educt or glass tube with the outer end ot' the eduction-neck D, i make use ot' a tunnelshaped glass mouth-piece, F, formed as shown, with flanges h t' at top and bottom, and with an auxiliary tubular neck or extension, k, projectingA down from the main neck l, and having a diameter less than that of the said neck l. The lower neck b of the body A extends down within the mouth of the piece F, with an air-space, m, going around between the said neck and the inner surface ot' the mouth or cup n, the air in such space serving to keep the fluid from contact with an elastic collar, G, that couples the mouth-piece F to the body A, the said collar being made like the collar E, hereinbef'ore described.

The induct glass tube H, iianged at top, as shown at o, and enlarged, as represented at p, receives the extension 7c, and is joined with the piece F by an elastic collar, I, applied to them, as shown, and made like the collar E, there being a space, q, around the extension, to hold air, to protect the collar from the acid or liquid.

The eduction-tubeK is shown as applied to the neck D by means of' devices like those described for connecting the induction-tube with the body A.

The india-rubber or elastic'bulb for extractin gair from the body A, in order for liquid to :nise intosuch, is shown at L. It fits upon a tapering glass nipple, fr, projecting from a cn p, s, that receives and ts upon a cylindri' cal neck, t, projecting from the body A, and heilig closed at its outer end, except in having a hole, u, in the upper part of the closure fu. Over this hole is, in the cup s, a passage or groove, w, leading from such hole to the bore ofthe nipple. This passage is essential only when the bottom of' thcnipple-cup s fits closely down upon the end of' the neck.v

The object of making the hole u in the upper part of the closure is to have it in its proper or highest position to prevent acid or duid in the body Afroln being drawn info the bulb.

The nipple being without any ange on its outer end, enables the bulb to be easily removed in order to admit airto pass into the nipple, and thence into the body A, to estop the apparatus from acting as a siphon.

It will be seen that while it may be so acting, and it may be desirable to arrest the dis- `uharge of' liquids, We have only to pull the bulb suddenly oi' the nipple, all of' which is better than to have the bulb slide in a flanged nube provided with a hole on its side.

I have found that when the bulb is arranged in a cylindrical tube, with a hole in its side, and with a flange at its end, such b ulb is liable at times to adhereto the tube, so as to render it difficult to slide the bulb lthereon. The tapering nipple is therefore much better, as it enables the bulb to be easily detached. With the tapering nipple one bulb will answer for several pumps, it being better to keep it oi', or nearly off', the nipple when the pump is not in use, as in such case it cannot get corroded and stuck upon the nipple.

The stand or supporter of' the glass acid Siphon-pump is represented as composed of two main parts, M N, the upper of` which has nv stem, x, projecting down from it into a post, y, of' the lower part. There is to the `sion may require.

post y a clamp screw, to act against the stem which is to slide freely within the post. The upper part N is composed of a ring, a', and a long trough or channeled arm, b', the two being arranged and connected as represented. The body A fits into and rests in the ring, and the eduction-pipe is placed in or rests in the arm. The base portion of the part M is perforated or forked, as shown at c'l c2, to receive the neck of a demijohn or carboy. or allow the passage of' the induction-pipe into the vessel, such part M `being shown in perspective view in Fig. 3. From the above it will be seen that the upper part of' the supporter can be adjusted to introduce the induction-pipe more or less vertically into the demijohn or vessel, as occa- If desirable, elasticv rings or bands d d e c' may be used around the eduction-tube, and also around it and the arm or trough in which it rests, such being to hold them in connection, and to cushion the tube in the trough.

I claim as my invention in the glass acid Siphon-pump as follows l. The combination of the grooved elastic collar E and the flanged .eduction-neck D, all

arranged and applied substantially as set forth. 2. rlhe tunnel-shaped glass mouth-piece F,

provided with the flanges It t' and the eXtension lc, arranged as specified. 3. The combination of' the grooved elasticY collar with a anged neck, as described, and a anged tunnel-shaped mouth-piece, provided with the extension k, the whole being so Vthat there may be around the extension and in the mouth-piece a space to hold air to insulate the collar from the fluid or acid, as specified.

4. rIhe elastic collar E, thickened near its edges or grooved, substantially as set forth, for the purpose of' receiving the iianges of the glass parts or necks embraced, or to be embraced, by such collar.

5. The im proved tube-joint, consisting of the Ilan ged necks and the elastic and grooved connection or collar applied thereto, as set f'o'rth. 6. The glass body A, provided with the nip ple-receiving neck closed, and having a hole in the upper part of the closure, all as set forth.

7. The adjustable upper part of' the stand, as composed of' the ring and the troughed or channeled arm, arranged and connected as described.

8. The combination of' the ring a', troughed arm b', and the stem or rod x, arranged and 

